Received: 8 September 2020
Accepted: 3 January 2021
First Online: 13 January 2021
Ethics approval and consent to participate
: This study was approved by the research ethics committee of the Faculty of Medicine at Assiut University in Egypt in 2020, reference number (17300456), consent to participate was waived as this is no risk for patients on participating in this research.
: Not applicable (consent was waived as this is a retrospective study and no harm for patients on publication).
: The authors declare that they have no competing interest.